Pulley slide



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O. D. PREMO PULLEY SLIDE` Flled Deo wr: IW

Dec. Z3

y 5 Sheecs-Sheecl 2 o. D. PREMO PULLEY SLIDE Filed Dec.

Dec. 23, 1941.

o. D. PREMO 2,267,043

PULLEY SLIDE Filed Dec. 22, 1959 s sheets-sheets IN V EN TOR.

A TT ORNEYS.

Dec. 23,1941.

Patented Dec. 23, 194i U NIT E D STAT ES PAT GFF Cil?.-

PULLEY Owen' D: Premo; Muskegon'Heights, Mieli; ApplicationzDecember 22,1f939;fSerial No. 310;6 16f 4 Claims'. A(Cl 4'5"-77'):

This-invention relates to telescopihg or progressive slides designed.primarily for. use.A` in. connection with drawers, containers orsimilari slidingobjects.

The. primary object oi the invent-ionis' topravide a slide of thischaracter which. will; support the drawer or objectv with which it isused,4 so that the drawer or object may be extended to'.` its fulldepth.

A further object of the inventionis. the: pro:- vision of a slide whichWill limit the verticalan'd lateral movement of: the drawer or object.with which it is used, during. the. movement` of the drawer or objecttoritsopen or active position..

still further object of; the invention. is` to provide means to cushion.the;` movements: ofi the sections of thel slides, providing a slidewhichis practically noiseless.

Anotherv object. off theY invention isV to provide equalizing. pulleysso arranged as. to: insure: the extension slidesA moving inunison.

Still another object of.. the invention is toAv pro#- vide a pulleyprogressive slide. wherein. when' the inside channel' member isv pulled.outwardly, the center channel member moves. inther sameI direction, butat approximately one-half of the speed', so: that when. theinsidechannel` member moves outwardly to its. entire. length,vthe=4center channel member assists in supporting the Weight of the drawer:andv its contents, duey to the fact that` the center channellmember isextendedt only approximately one-half of. its length;

With the foregoing andzother objects ini View, which will appear' as thedescription: proceeds, the invention residesrin the combinationandanrangement of parts. and in the details' of construction hereinafterdescribed andv claimed',- it being understood` that changes. inthe-preciseembodiment of the invention herein described', may be madewithin the scope ofk what is claimed; without departingfrom. the spiritoiI they invention.

Referring to the drawings:

Figure 1 is a side elevational view of a pulley slide constructed inaccordance with the invention, one. end oi the pulley'slide being shownin section.

Figure 2 is a longitudinal sectional view taken on line 2-2 of Figure-1.

Figure 3 is a vertical sectional view taken on line 3-3 of Figurey l.

Figure 4 is a sectional view taken on lined-4 ofFigure 1'.

Figure. 5 is a modified form: of the invention endless: belt; or exiblemember the outermost channel,r member;

Figure.. 6I is` a. longitudinal sectional.',ViewV taken on line 6"-6';of. Figure;- 5;.v f

Figure '7 is a sectional View takenxomline 1*--1 of; Figure 5;` o

Figure Sis a sectionalcview takeni online: 8-8 of.' Figure" 5a.,

Figure;- 91 is,- anr elevational viewi illustrating a furthermodiiedform: o'fi the` invention.

Figure 10 is a sectional view taken on. line l-I'rofa Figure 9;. o Y

Figurel l1 isA a sectional'. views taken through a sliding drawervequipped with' slides constructed in accordance.: withv the' inventiom,andillustrating am eouli'alizerv4 used: in conjunction with; theslides;y`

Ref erringz to@ the: drawings in detail the drawer slide as indicated bysheet I- off theI drawings, comprises an outer. channel: meinber- 5?which` is secured to a supporting surface: such. asfacabinetcase,; orthe likegso that the Openside thereof' is.'y disposedf inwardly.V rIiheyupper;v and;4 lower flanges Er of the outer channely member 5r areformed: with:y grooves- I-f extended longitudinally thereof I and:provideda in theinner adjacent sur# faces of the anges. It will:ofcourse be understood that the outer channel:V member 5 is of: a

length equal torthe engen es thearawer withv 'withbores in:A whichVthreaded sleeves I 3f are positioned,v t'fl'iethreaded: sleevesiproviding housingsl forthe threaded spring: supportsY M f on which thesprings` |5- rest,.the outer ends off the springs isaccommodatingthe-balls'` lr6; These ballsy I6 extend through openings formed-in theflanges ofA the intermediate channel member; the. open.- ings.: being=of. diameters less l than thel diameters ofL the balls I-B; sovthatvonlyA portions of thefballs I6 will extend through the openings.,torridein the grooves Lr Thus it willbe seen that the illust-rating a.simplied method of securing the l balls willf set up. :trictionat7contact withthe flanges 6 of the outer channel member, restrictingmovement of the intermediate slide with respect to the outer channelmember.

The wooden filler I2 used in connection with each slide, also isprovided with cut-out portions I1 arranged near the opposite endsthereof, the openings providing housings for the pulleys I8.

Bores I9 are also formed in the wooden llers I2 and accommodate theshafts 2U that are eX- tended through the pulleys, and on which thepulleys operate. Plugs 2| close the upper ends of the bores and hold theshafts 20 in their proper positions within the filler. pulleys I8, is aflexible power transmitting member which in the present showing is inthe form Operating over the of a belt 22 secured to the casing orvframein which the drawer is mounted, by means of the pin 23, the pin 23 beingshown a's`exte'nding through the casing or frame, the inner endof thepin being secured to the belt 22. `An elongated opening is formed in theintermediate channel member, to accommodate the pin 23 and allowmovement of the intermediate channel member with respect to the outer orstationary channel member.

The wooden filler is also provided with a groove 24 in which the belt 22operates. A pin indicated at 25 extends through the innermost channelmember 8v and has its inner end connected with the belt 22.v This Vpin25 also moves through lthe groove 24.

In the form of the invention-as illustrated by sheet 2 of the drawings,the slide is substantially of an all-metal or plastic 'character andembodies an outer channel member 26, an inner channel member 21 and anintermediate channel member 28, the outer channel member being se-'cured' tothe casing or frame, while the inner- Inos't channel member 21is secured to the drawer or. container with which the slide is used.

Mounted within the intermediate channel member and disposed adjacent tothe opposite ends thereof, are pulleys 29 that are mounted von thekshafts 30 shown as extended into openings formed in the intermediatechannel member 28. These pulleys 29 are formed with substantiallyV-shaped grooves in which the V- shaped belt 3I operates.

' -The pulley 29 at one end of the intermediate channel 28 is mounted ona shaft carried by the nyoke 32, the yoke 32 being provided 'with athreaded opening in which the screw 33 operates, the screw 33 beingextended through an opening inthe 'ange 34 formed at one end of theintermediate channel member 28. Thus it will be seen that due to thisconstruction, by rotating the screw 33, an adjustment of the pulley atone end of the intermediate channel member may be had, to tighten orloosen the belt. A plate 35 is struck from the outer channel member 26and extends through an elongated opening formed in the intermediatechannel -member 28, the plate 35 overlying the belt 3I. l A plateindicated at 36 is struck from the inner channel member 21 and extendsinwardly to a point directly under the belt 3|. These plates 35 and 36vare formed with cut-out portions eX- tending inwardly from the freeends thereof, the cut-out portions accommodating the lugs 31 that aresecured to the belt. Thus it will be seen that as the plate 36 movesoutwardly with the drawer, the belt will be moved, to extend theintermediate channel member.

Should it be desired to remove the drawer or container with which'V theslides are used, it is only necessary to press the belt inwardly tocause the lugs 31 to move from the cut-out portions of the plates 35 and36. It will be seen that the slides are now free to be moved with thedrawer, releasing the drawer.

In Figure 9 of the drawings I have illustrated a further modified formof the invention, and as shown, the inner channel member which isindicated by the reference character 38 is secured to the drawer, and isprovidedwith an upwardly portion terminating in an outwardly extendedlongitudinal flange 39.

1- The inner channel member is provided with a. wooden filler 40 formedwith vertical bores in which the balls 4I are mounted, the balls 4Ibeing spring-pressed in the same manner as the balls shown vin Figures 1and 2 of the drawings. The intermediateV channel member, which isindicated by the reference character 42, is provided with an upwardlyextended longitudinal ange 43 that supports the shafts 44 on which thepulleys 45 areimounted. Grooves are formed in the pulleys 45 andaccommodate the belt 46.

Plates indicated at 41 and 48 are struck from the channel members 38 and49 respectively, the channel member 49 being the outer channel member ofthe slide. Lugs 56 are carried by the outer'and inner channel membersand extend into cut-out portions of the plates 41, connecting the outerand inner channel members to the belt 46. y

The channel members shown by Figure 11 of the drawings are substantiallythe same as the channel members shown by Figure 10 of the drawings, withthe exception that the lower ends of the channel members are formed withextensions that extend under the drawer or container with which theslide is used, the extension of the innermost channel member beingindicated by the reference character 5I, the extension of theintermediate channel member being indicated by the reference character52, while the extension of the outermost channel member is indicated bythe reference character 53.

'As shown, the extension of the intermediate channel member is providedwith openings for the reception of the shaft 54 on which the pulley 55is mounted. The shaft 54 being also supported by the bar 56'that extendsacross the lower surface of the drawer or slide, connecting the slidesat opposite sides of the drawer. This bar 56 also provides a support forthe pulley 51 at the opposite side of the drawer.

While'only one of these bars 56 is shown, it is to be understood that asimilar bar is used at the rear end of the drawer providing a supportfor pulleys'similar to the pulleys 55 and 51 at the front end of thedrawer. Belts indicated at 58 are connected to the outer andy innerchannel members of the slide, and operate over the pulleys, so thatmovement of one slide or channel member will produce a relative movementof the adjacent channel member, to accomplish the purpose of theinvention.

While I have'shown and described the slide as used in connection withdrawers or containers, it is to be understood that the principle of theinvention can be effectively carried out in connection with large andheavy machinery, platforms or the uke.

From the foregoing it will` be seen that due to the construction shownand described, a movable object supported by the slide, will, whenextended, be properly supported and will move freely,-regardless of theweight of the movable object.

It will also be noted that When the slide is used as a support for adrawer, the drawer may be extended so that the full length of the draweris exposed, and easy access to the contents at the inner end of thedrawer may be had. In the operation of the slide, it will be obviousthat as the inner channel is pulled outwardly, the intermediate channelmember moves in the same direction, but at one-half of the speed of theinner channel member, with the result that when the inner channel memberis moved outwardly its entire length, the intermediate channel memberassists in supporting the weight of the drawer by remainingapproximately one-half Way in the outside channel member and half-wayextended from the inner channel, supporting the inner channel member.

It is believed that in view of the foregoing detail description, afurther detail disclosure as to the operation of the various channelmembers is unnecessary.

What is claimed is:

1. A slide of the class described, comprising an outer channel member,an inner channel member and an intermediate channel member, said outerchannel member adapted to be secured to a support, said inner channelmember adapted to be secured to a drawer,pulleys mounted within theintermediate channel member, an endless flexible member operating overthe pulleys, and means for securing the endless flexible member to theouter and inner channel members, whereby movement of the inner channelmember causes a relative movement of the intermediate channel member toextend or retract the inner and intermediate channel members.

2. A slide of the class described, comprising an outer channel member,an inner channel member and an intermediate channel member slidablymounted with respect to each other, a ller mounted within theintermediate channel member, said ller having openings, pulleys mountedin said openings, an endless flexible member operating over the pulleys,means for securing the outer channel member to the endless flexiblemember, means for securing the inner channel member to the endlessilexible member whereby movement of the inner channel member produces arelative movement of the intermediate channel member extending orretracting the intermediate channel member.

3. A slide of the class described comprising an outer channel memberadapted to be secured to a supporting structure, an inner channel memberadapted to be secured to a movable member, and an intermediate channelmember, said channel members being slidably mounted with respect to eachother, pulleys mounted on the intermediate channel member, an endlessmember operating over the pulleys, lugs on the endless member, saidinner channel member and outer channel member having openings in whichthe lugs are positioned, connecting the inner and outer channel membersto the endless member, and means for restricting longitudinal movementof the channel members with respect to each other.

4. A slide of the class described, comprising an outer channel member,and an inner channel member and an intermediate channel member, saidchannel members being slidably mounted with respect to each other, meansfor imparting movement of the inner channel member to the intermediatechannel member extending or retracting the inner and intermediatechannel members, said means embodying pulleys mounted on theintermediate channel member, and a belt operating over said pulleys,said belt being secured to the outer channel member and inner channelmember.

OWEN D. PREMO.

